"the greenway has some setback requirements as you go higher now but I don't know if it would apply to this site" Setbacks for greenway are typically for the south side of trail for shadowing considerations that can be an issue with freeze thaw of wintertime and lower angle of the sun.

http://apps.ci.minneapolis.mn.us/PIApp/InspectionPermitsRpt.aspx?Year=2017&Action=Show&PID=0202824210116 Looks like there is a geothermal HVAC permit issued to Watson Forsberg who built the new Walker Methodist church. Here is a link from church about ongoing improvements. http://www.mountolivechurc...